What steps will reproduce the problem? 1. Create a minimum testcase, called Test.py

import mox import unittest import os

class TestExample(unittest.TestCase): def test_stat(self): mock = mox.Mox() mock.StubOutWithMock(os, 'stat') stat = mock.CreateMockAnything() os.stat('a').AndReturn(stat)

    mock.ReplayAll()
    print os.stat('a')
    mock.VerifyAll()
    mock.UnsetStubs()

2. nosetests
3. Exception is raised because nosetests is using os.stat, which is stubbed out Traceback (most recent call last): File "/usr/local/bin/nosetests", line 9, in <module> load_entry_point('nose==1.2.1', 'console_scripts', 'nosetests')() File "/Library/Python/2.7/site-packages/nose/core.py", line 118, in init **extra_args) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/main.py", line 95, in init self.runTests() File "/Library/Python/2.7/site-packages/nose/core.py", line 197, in runTests result = self.testRunner.run(self.test) File "/Library/Python/2.7/site-packages/nose/core.py", line 61, in run test(result) File "/Library/Python/2.7/site-packages/nose/suite.py", line 176, in call return self.run(*arg, **kw) File "/Library/Python/2.7/site-packages/nose/suite.py", line 223, in run test(orig) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/suite.py", line 70, in call return self.run(*args, **kwds) File "/Library/Python/2.7/site-packages/nose/suite.py", line 74, in run test(result) File "/Library/Python/2.7/site-packages/nose/suite.py", line 176, in call return self.run(*arg, **kw) File "/Library/Python/2.7/site-packages/nose/suite.py", line 223, in run test(orig) File "/Library/Python/2.7/site-packages/nose/suite.py", line 176, in call return self.run(*arg, **kw) File "/Library/Python/2.7/site-packages/nose/suite.py", line 223, in run test(orig) File "/Library/Python/2.7/site-packages/nose/case.py", line 45, in call return self.run(*arg, **kwarg) File "/Library/Python/2.7/site-packages/nose/case.py", line 138, in run result.addError(self, err) File "/Library/Python/2.7/site-packages/nose/proxy.py", line 135, in addError self.result.addError(self.test, self._prepareErr(err)) File "/Library/Python/2.7/site-packages/nose/result.py", line 61, in addError exc_info = self._exc_info_to_string(err, test) File "/Library/Python/2.7/site-packages/nose/result.py", line 187, in _exc_info_to_string return _TextTestResult._exc_info_to_string(self, err, test) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/unittest/result.py", line 164, in _exc_info_to_string msgLines = traceback.format_exception(exctype, value, tb) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/traceback.py", line 141, in format_exception list = list + format_tb(tb, limit) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/traceback.py", line 76, in format_tb return format_list(extract_tb(tb, limit)) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/traceback.py", line 101, in extract_tb line = linecache.getline(filename, lineno, f.f_globals) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/linecache.py", line 14, in getline lines = getlines(filename, module_globals) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/linecache.py", line 40, in getlines return updatecache(filename, module_globals) File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/linecache.py", line 80, in updatecache stat = os.stat(fullname) File "/Library/Python/2.7/site-packages/mox.py", line 1002, in call expected_method = self._VerifyMethodCall() File "/Library/Python/2.7/site-packages/mox.py", line 1049, in _VerifyMethodCall expected = self._PopNextMethod() File "/Library/Python/2.7/site-packages/mox.py", line 1035, in _PopNextMethod raise UnexpectedMethodCallError(self, None) mox.UnexpectedMethodCallError: Unexpected method call Stub for <built-in function stat>.call('/Library/Python/2.7/site-packages/nose/case.py') -> None

What is the expected output? What do you see instead?

Expected: pass Real: the error message above

What version of the product are you using? On what operating system?

mox==0.5.3

OSX 10.8 and RHEL 6.3

Please provide any additional information below.